If you are ever in South Yorkshire you are welcome to come and have a listen.
I was talking to Richard at Owston and he suggested LS6 speaker cable and SSC interconnects as a possible upgrade path, although the basic system really is excellent now. I can't complain about anything. It does music.
The speakers themselves have been angled slightly away from axis in a toed-out arrangement, known in pro circles as a "splayed array" This ensures that listeners can never be on axis to the drivers as they have a rising frequency response. It works beautifully.
I kept vacillating between my 2W single ended valve amp and the NVA DIY, but overall, the NVA is just so good, it has taken up permanent residence in the system now. I don't know what I've done, I don't know much about transistors, but putting a second LED on the negative rail, has done something very positive to the music. What the mechanism is I'm not sure; might have something to do with having both rails now standing on the 1.2V drop of an LED each, rather than only the one.
If that's the case, then not having an LED at all might be even better, but we are now getting into tiny differences. Jimmy Hughes used to prattle on in the '80s, about the sonic benefits of disabling the indicator LEDs on his preamp, triple Krell power amps and in the on/off button on his LP12. Maybe he was talking and maybe I'm talking too